Archive for the ‘construction&equipments’ Category
Wednesday, December 31st, 2008 |
There is a rapid advancement in the field of heavy equipment technology. Unlike the earlier days now, using global positioning satellite technology, heavy equipment placed anywhere in the world can be checked or diagnosed. Finding the right new equipment suitable is also getting to be a big challenge. With lot of options and features to consider, it will be an overwhelming chore.
Among the used heavy equipment, backhoe-loaders are used in small demolitions, breaking asphalt, construction, digging holes/excavating, light transportation of building materials, powering building equipment, and paving roads. To smash concrete and rock, tools such as breakers can be used instead of the backhoe bucket. To empty its load more quickly and efficiently, some loader buckets have a retractable bottom. Grading and scratching off sand is executed with retractable-bottom loader buckets. The front assembly may be permanently mounted or have a removable attachment. Often other devices and tools replace the bucket. In order to mount different attachments to the loader, the backhoe loader must be equipped with a tool coupler.
Heavy Bulldozers equipment but they are also large and tracked engineering vehicles. With the mobility and ground hold given by the tracks they can move through very rough terrain. Swamp tracks in bulldozers are merely extra wide tracks.
The distinct assemblies of used excavators are workgroup, undercarriage and house. The boom, arm or dipper and attachments such as bucket and breaker are parts of the workgroup of a compact hydraulic excavator. They are connected to the front of the house structure of the excavator via a swing frame that allows the workgroup to be hydraulically pivoted right or left to achieve offset digging for trenching.
Harvesters today do practically all of the commercial felling in Sweden and Finland and they were developed in these countries. Harvesters work best in less difficult terrain while clear cutting areas of forest. Small and very agile harvesters are used in the Nordic countries for thinning operations. An iron or a cylinder placed between two metal rods so that it is able to freely slide down and up are included in the pile drivers. A pulley system is used to raise the cylinder which may involve the use of manual labor, steam or hydraulics. Small explosions in the chamber are used in modern pile drivers to raise the cylinder.
A piece of heavy equipment used for earthmoving in civil engineering, is a wheel tractor-scraper. A vertically moveable hopper in the rear part with a sharp horizontal front edge does the scraping. Raising and lowering of the hopper is done hydraulically. The front edge cuts into the soil like a cheese-cutter when the hopper is lowered.
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Wednesday, November 19th, 2008 |
Nowadays, manufacturer’s dealers and business owners that activate in the construction field have the possibility of choosing between new and used heavy construction equipment. Furthermore, they can take full advantage of the online market, online auctions and other such fast and easy ways of buying the needed heavy equipment. When talking about new versus used construction equipment, there are numerous debates and speculations regarding the benefits and disadvantages of choosing each of these two types of construction equipment.
The Relevant Financial Benefit
For sure, the main advantage that the used heavy equipment presents is the fact that it comes at a more reasonable price. The online market presents wide ranges of discounted construction equipment that might seem, financially speaking, incomparable with the prices for new equipment. Still, in some cases, this might not work as an advantage, since used machineries can imply extra repairing costs. But in order to make sure that the machine comes at a justified and advantageous price, the buyers need to be informed regarding the obsolesce and deterioration factors.
Performance and Functionality, just like New Heavy Equipment
Another advantage that needs to be taken into consideration when thinking about choosing between new and used construction equipment is the fact that the used machines might be as optimized and as good as the brand new ones. In many cases, the online auctions present machines that were never used or machines that were used for brief periods of time and function perfectly. Even though some buyers might be a little suspicious when dealing with the fact that used construction machinery might be as optimized and as functional as the new equipments, there are great selections of used trucks or used cranes that come with the same features and the same capabilities as the new ones, yet with a smaller price.
Certification and Guarantees
The online marketplace that deals with construction machineries has grown significantly and the explanation is quite simple. Nowadays, the Associated Equipment Distributors (AED) and Trade Yard, Inc have decided to collaborate and to provide professional inspections for the used construction heavy equipment that is sold online. As a result, more and more business owners and dealers have become interested in purchasing used heavy equipment online, instead of opting for new equipment. Basically, these certifications for quality and performance certify the customers that even though the machineries are labeled as “used”, they are safe and functional.
The Online Advantage
Since the used heavy equipment that are sold online are guaranteed by such reputable organizations, purchasing such heavy equipment using the specialized online market and auctions is considered, by many buyers, to be by far more advantageous then opting for the conventional types of purchases. First of all, all the information is provided by the sellers and it can be viewed with the help of some clicks, in a matter of seconds. Buyers can browse through thousands of used construction machines and then make their final decision, a fact which saves them time, efforts and other expenses.
Considering the facts above, there is no wonder that more and more buyers are interested in purchasing used construction machineries instead of new and more expensive ones. For now, the heavy equipment market online is gaining more popularity and success.
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Thursday, November 6th, 2008 |
The US Army offers exciting and rewarding career openings for heavy construction equipment operators with relevant skills and experience. The key duties of heavy construction equipment operators in the US military are to operate various machineries such as crawler and wheeled tractors with dozer attachments, scoop loader, motor grader and towed or self propelled scraper. The job requires skills to interpret information on grade stakes. In the course of their duties, these operators would clear grubs, strips, fill material with scrapers, make excavations and load different material using a loader. They would also be expected to spread material evenly and level out ground, construct ditch using a grader, lift and move steel and other heavy building materials using winches, cranes, and hoists, and dig holes and trenches using power shovels. Other common tasks include the transportation of heavy material and construction equipment using tractor and trailer to provide assistance during engineering missions under combat conditions.
Heavy equipment operators in the army would also be called upon to construct berms, excavate side slopes with a crawler tractor, perform grading and finish side slopes mixing stabilizing material with soil and surface and drainage maintenance. The physical demands for the initial award of MOS (Military Occupation Specialty) are extremely high. A physical profile conforming to 222221 as per US Army standards is essential. It is also a critical criterion that the incumbent should not be colorblind.
To qualify for a job as a heavy equipment operator in the US army, a minimum score of 90 in the aptitude area, GM is expected. A valid state motor vehicle operator license is also a prerequisite. The induction provided to a new recruit in this position consists of nine weeks of Basic Training and four to twelve weeks of AIT (Advanced Individual Training) in Missouri. The training period for different construction equipment differs and the length of the initial training would depend on the equipment to be operated on the first assignment. Seven weeks of training is also provided on how to operate and perform general operator level maintenance to 5-ton dump trucks, M 915 tractor with semi trailer, dozer, grader, scraper and scoop loader. After successful completion of the course, there may be further training for operation of other equipment depending on the requirements of the duties to be assigned in the place of posting.
The Initial Entry Training or the IET is essentially intended to transform a civilian into a technically and tactically competent soldier and to inculcate in him the values of the US army. This process is a tough and comprehensive process, which requires complete dedication on the part of the trainee to completely transform in accordance with the requirements of a distinguished military career. In the initial phase of training, together with familiarizing the trainee with the goals and values of a military career, focus is also placed on the development of the individual basic combat skills and physical fitness.
The second phase of training for a heavy equipment operator is called the GUNFIGHTER phase and as the name suggests, it focuses on weaponry training. These fairly long and intensive training processes culminate in the making of a competent combatant with special skills as a heavy equipment operator.
The pay and benefits for a heavy equipment operator are as per US Army standards for soldiers. On completion of military service, there exist scores of opportunities for being employed in the civilian sector also.
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Sunday, October 19th, 2008 |
Contrary to the common myth, the job of a heavy equipment operator is not confined to just operating the bulldozer. Nor is it a gender specific vocation since both men and women are employed in this field.
If you can operate large machinery, are willing to work as a team, possess satisfactory communication skills and are open to suggestions for improvement, you can definitely be successful as a Heavy Equipment Operator.
Who is a Heavy Equipment Operator
Neither a designated trade nor designated profession, a heavy equipment operator maintains, repairs and adjusts the huge not so very delicate machines used construction Equipment work. They also find employment at travel refuse collection routes or freight jobs.
Educational Qualifications and Eligibility Criteria
There are very few schools in the US that offer courses in heavy equipment training. Students are taught the basics of analytical and diagnostic techniques along with an in depth knowledge of electronics. Being a field job, the training imparted for the job is mostly done in practical surroundings.
The sub categories of the job position, such as a mechanic require a certification of validation, which needs to be renewed every 5 years.
Other than the educational factors, the first and foremost eligibility criterion is the possession of a Commercial Drivers License. Experience in driving trucks and smaller construction machinery is considered an added advantage. An ability to work with different people, to be open to the idea of additional training and responsibility and judgment of distance are some of the other criteria for hiring a heavy equipment operator.
A number of apprentice jobs are available for fresh graduates or trainees who have completed formal courses in heavy equipment operations. Most organizations pay a very nominal salary at the entry level to these apprentices.
Nature of the Job
The job of a heavy equipment operator is to operate machines such as the off highway trucks, graders, articulated trucks and loaders, scrapers, pavers, backhoe loader and shovels. As a junior operator, one could start out with operating small equipment and later move on to the heavier ones. The equipments under the former category include small rubber tire loaders and monitoring equipments.
With experience and training, one could eventually be promoted to senior positions such as a superintendent, job foreman, safety officer or trainer. If you are an independent minded person, you could also go ahead and set up a business of your own, after acquiring a few years of experience.
As this is a job that is required in almost every heavy manufacturing facility, one could easily relocate to any town or city without any worries about finding a decent job as a heavy equipment operator.
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Sunday, October 5th, 2008 |
Capital is key in order to operate a successful business, especially when the economy is as fickle as it is today. The heavier your cash flow, the greater amount of growth your company will experience. This is especially relevant in the construction industry. For all types of construction, the goal is to complete projects in accordance with plans and specifications, on time, within budget, and at the lowest possible cost. A construction company’s success and failure could very well depend on adding a fourth crane to your garage.
Equipment is the single largest investment for a contractor, with costs running from $15,000 to more than $100,000 depending on the model and quantity. There is a solution to cut equipment costs and reduce overhead by way of equipment leasing.
According to the recently released Equipment Leasing and Finance Association’s Annual Equipment Finance Report, construction companies and trucks/trailers were deemed the biggest winners as far as benefits reaped from leasing equipment. In one year, construction leasing grew almost 2 percent, maintaining its No. 3 placement in the $6-billion equipment leasing industry.
Through certain Construction Equipment for sale leasing plans, a contractor is able to select from leasing options that allow the company to trade in equipment for the latest upgrades. This is ideal in the construction business, where there are frequent advancements made to equipment requiring contractors to constantly update in order to stay competitive.
As the owner of a new roller compactor and lowboy tractor, understands the benefits of leasing new equipment. “Once you understand how leasing works, the pros are obvious. The tax benefits are great because the depreciation allows for a write-off.”
The leasing company (the lessor) contracts the construction company (the lessee) to lease the equipment and pay for it monthly over a fixed time frame of typically two to five years. The lessee will sign the contract for the type of lease that caters to their financial capabilities. The lease can also depend on whether the lessee wants to own the equipment at the end of the lease term or “return” the equipment to obtain a more up-to-date replacement.
All business owners, small and large, can be lessees. Leasing companies secure the funds from the bank. More often than not, lessees are already pre-approved.
The leasing company, if it’s a good one, will handle all the paperwork, make sure everything is completed and coordinate with the equipment vendor. It is also the leasing company’s responsibility to ensure that payment and delivery are in sync with the schedule of the construction company, and to conduct any customer service needs.
Companies can lease everything from a single bulldozer to 10 concrete mixers. The business owner has a non-cancelable obligation to pay the lease fees and maintenance costs relating to the equipment during the lease term. The lessee also bears the costs of equipment damages and insurance.
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Thursday, September 25th, 2008 |
The new excavator concept, Komatsu company had decided to introduce its first hybrid machine in what is its flagship line – its Dash 8 excavator range.
“As a leading supplier to the construction manufacturing industry, we are determined to meet the needs of the time by practically proposing innovative equipment designed to reduce environmental impacts, including CO2 reduction,”
Compared with a standard PC200-8, Komatsu’s hybrid excavator typically achieves a 25% reduction in fuel consumption – but in certain applications, where the machine is primarily involved in digging and slewing operations (rather than travelling), fuel reductions of up to 40% have been recorded.
Komatsu’s equipment proprietary Hybrid System converts energy generated when the upperstructure reduces speed while slewing, storing the energy in the capacitor, then using it to assist the engine via the power-generation motor when the engine accelerates.
All components of the Komatsu Hybrid System – with the exception of the capacitor cells – are designed and manufactured in-house by Komatsu, ensuring high reliability and durability.
The main difference between conventional excavators and Komatsu’s new hybrid machine include:
• An electric motor to turn the upperstructure, rather than a hydraulic motor, which also stores energy generated when the slewing action is braked, with the regenerated energy used to augment engine power – allowing the engine to be used at lower speeds with higher-efficiency combustion.
• Capacitors which can instantaneously and efficiently collect, store and discharge electrical power from the regenerated energy, assisting the diesel engine in accommodating an excavator’s need for dynamic and frequent bursts of power when carrying out excavation work.
• When the engine is at idle, it is run at “super low” speeds, further contributing to lower fuel consumption.
Komatsu expects to sell 30 hybrid excavator units, all in Japan, before offering the concept in international markets.
In Japan, the new PC200-8 Hybrid is selling for 27 million yen (around $A270,000) – about a 20% premium compared with a conventional machine.
the new hybrid excavator is not available in Australia just yet, it is an example of the company’s technological leadership.
“Komatsu has led the industry for many years in the development innovative, fuel-efficient hydraulic systems, engines and electronic control systems,”
“Our release of the world’s first commercially available hybrid excavator is the latest example of our industry-leading technology and engineering.
“And in the development of this new-concept machine, Komatsu has maintained its philosophy of designing and manufacturing the major components in-house, ensuring full integration of all aspects of the heavy machine, ensuring maximum reliability and performance,”
“In releasing the world’s first hybrid excavator, we are demonstrating our strong commitment reducing customers’ machine owning and operating costs – and also to making a real difference in reducing greenhouse gas emissions in the longer term,”
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Thursday, September 11th, 2008 |
Rough terrain forklifts are perfect for a variety of outdoorheavy construction equipment and loading needs. A rough terrain forklift is often used to carry materials like lumber, bricks, steel beams, and concrete equipment, among others. A rough terrain forklift differs from a normal forklift in two major ways: they are operated by internal combustion engines, and they have inflatable tires with thick tread that allows operators to drive them over uneven or loose terrain.
A rough terrain forklift is a strong rugged vehicle. Many heavy-duty rough terrain forklifts can carry several tons of material at a time. They are carefully calibrated to provide a counterbalance at the back of the lift that keeps the load from making the lift tip forward. Some models of rough terrain forklifts have four-wheel drive as well as four wheel steering. Most rough terrain forklifts have a hydraulic system that lifts and lowers the forks.
Internal combustion engines power rough terrain forklifts. These engines provide more power than electric engines, allowing for greater acceleration and speed. Different internal combustion engines run on different fuels. Gasoline, liquid propane, compressed natural gas, and diesel are the most common. Diesel is the cheapest, but it is not as commonly found as gasoline. One additional advantage of internal combustion engines is that they significantly reduce refueling time.
The tires on a rough terrain forklift are important. Rough terrain forklifts are able to ride over uneven ground because of the traction that the tires provide. Some rough terrain forklifts are equipped with tires that allow people to drive them over rocks, wood, sand, mud, snow, and ice, making them virtually unstoppable. Most of these tires fill with air like conventional tires found on cars and trucks, but some are solid rubber.
A rough terrain forklift is a great addition to any construction site. Forklifts make it possible for operators to transport tons of material over hazardous ground.
Forklifts provides detailed information about forklifts, including rough terrain and truck-mounted forklifts, used forklifts, and forklifts for sale, as well as forklift parts, accessories, operators, and safety.
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Wednesday, September 10th, 2008 |
Cranes are machines that use levers and/or pulleys to lift significant weights. A crane one passes on the road may look like a fairly modern invention, but these machines have actually been used for at least the past 2000 years, if not longer. The Romans used cranes to build huge monuments. Medieval churches were constructed with them. Also, the Egyptians may have used them to create pyramids. The modern version can be either simple or complex, and cranes vary based on their application.
A relatively simple crane is the mobile crane. A telescopic boom (arm) or steel truss mounts its movable platform. Either pulleys or levers raise the boom. Generally a hook suspends from the boom.
The platform of a mobile crane can either have traditional wheels, wheels designed for railroad tracks, or a caterpillar track, which is useful for navigating unpaved and uneven surfaces. Mobiles can be used for demolition or earthmoving by replacing the hook with an appropriate tool, such as a wrecking ball or bucket. Telescopic cranes, with a series of hydraulic tubes fit together to form the boom, can also be mobile.
Truck mounted and rough terrain cranes are both essentially mobile as well. The truck-mounted crane generally has outriggers to increase its stability. Rough terrain cranes tend to have a base that resembles the bottom of a 4-wheel drive vehicle. Outriggers also stabilize these cranes. They tend to be used in rough terrain, as the name suggests, and are frequently used to pick up and transport materials.
Loader cranes have hydraulic powered booms fitted onto trailers. They load goods onto the trailer and the jointed sections of the boom are folded down when not in use. The loader may also be considered telescopic, as one section of the boom, in some designs, may telescope for ease of use.
Stacker cranes are most frequently seen in automated warehouses where they tend to follow an automatic retrieval system. For example, in huge automated freezers, these cranes, equipped with forklift apparatus, can work by remote, stacking or obtaining foods as needed. This retrieval system makes it possible to keep workers out of the cold.
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Friday, September 5th, 2008 |
Excavation is most commonly and best known for a technique within the science of archaeology. The individual types of excavation are known simply as digs to those who participate, with this being an over literal description of the process.An excavation concerns itself with a specific archaeological site or connected series of sites, and may be carried on over a number of years, since the work is normally seasonal.
Within the industry of excavation, many more techniques may be utilized, with each dig having its own particular features that may necessitate differences of approach. Resources and other practical issues don’t allow archaeologists to carry out excavations whenever and wherever they choose, as many known sites have been deliberately left alone and non excavated.
Initially, excavation involves the removal of any topsoil that is uncovered by machine. What is dug up may be examined by a metal detector for stray finds but unless the excavation site has remained untouched for a long period of time, there is a small layer of modern material on the surface that is of limited archaeological interest.
In rural areas, any type of archaeological features should be visible beneath the surface. With urban areas, they may be thick layers of human deposits and only the uppermost will be visible to the naked eye. With either case, the first task is drawing a scaled site plan that will show the edges of the excavator.
Excavation is also useful for digging out houses and trenches. When clearing dirt out for roads or sub divisions, excavation is what takes care of things. Even though there are a few means, the term excavation is used anytime that the earth or dirt is disturbed.
Heavy machinery is also very common with excavation, such as excavators or backhoe loder. Excavating crews run the equipment and dig up soil and rocks for whatever the purpose may be. Excavators are the most used machinery, as they can move a lot of dirt in a little bit of time.
Anytime you are taking part in excavation, you should always use common sense and be safe. If you plan to get down into a hole or trench, you should always use a trench box. Even though the hole may not be that deep, excavation sites can always cave in and at that point - things are very dangerous and possibly even deadly.
For digging up rare artefacts or putting in houses or roads, excavation is something that has been around for years and years. There is a lot to learn with excavation, as you’ll need to know how to run machinery.
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Thursday, September 4th, 2008 |
In recent years, hydraulic excavator capabilities have expanded far beyond excavation tasks. With the advent of hydraulic powered attachments such as a breaker, a grapple or an auger, the excavator is frequently used in many applications other than excavation. Many excavators feature quick-attach mounting systems for simplified attachment mounting, dramatically increasing the machine’s utilization on the job site.
Excavators are usually employed together with loaders and bulldozers. Most wheeled versions, and smaller, compact excavators have a small backfill (or dozer-) blade. This is a horizontal bulldozer-like blade attached to the undercarriage and is used for pushing removed material back into a hole.
Excavators are also called diggers and 360-degree excavators, some times abbreviated simply to a 360. Tracked excavators are sometimes called trackhoes by analogy to the backhoe. Even though the ‘back’ in backhoe refers to the action of the bucket (which pulls “back” toward the machine) and not the location of the shovel, excavators are also occasionally referred to as fronthoes or even just “hoes” .
Also referred to as a loader backhoe, the backhoe loader is an engineering and excavation vehicle that consists of a tractor, front shovel and bucket and a small backhoe in the rear end.
Backhoe loaders are common and can be used for many tasks, which include construction, light transportation of materials, powering building equipment, digging holes and excavating, breaking asphalt, and even paving roads.
We can often replace the backhoe bucket with other tools such as a breaker for breaking and smashing concrete and rock. There are some loader buckets that offer a retractable bottom, which enable it to empty the load more quickly and efficiently.
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